CN105467232B - The test circuit of converter - Google Patents
The test circuit of converter Download PDFInfo
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- CN105467232B CN105467232B CN201410456489.3A CN201410456489A CN105467232B CN 105467232 B CN105467232 B CN 105467232B CN 201410456489 A CN201410456489 A CN 201410456489A CN 105467232 B CN105467232 B CN 105467232B
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Abstract
The present invention discloses a kind of test circuit of converter, the converter includes a cathode voltage output pin and several feedback output pins, the test circuit includes some parallel branches, each branch includes the LED of several series connection, the positive and negative anodes sequential of the LED in each branch, the cathode of the first LED of each branch connects the cathode voltage output pin, one of several described feedback output pins of end LED connections of each branch, several positive and negative interpolars in the LED on each branch are connected with wire jumper.The converter of corresponding different output current, only need to be by adjusting the wire jumper short circuit number in test circuit, and need not use to LED panel and more will not relate to replace LED panel, uses the time saving cost-saving of the test circuit.
Description
【Technical field】
The present invention relates to test circuit, more particularly to a kind of test circuit of converter.
【Background technology】
The screen of current electronic product would generally use LED panel, and LED panel can use converter into
Row drives as LED, and converter is a kind of constant current output, the adjustable converter of voltage.Test converter's at present
Whether output current meets the requirement of corresponding LED panel, it will usually is surveyed using corresponding LED panel.
However, since the screen specification of electronic product is various, its corresponding converter is different, it is necessary to difference
The converter of specification is tested.Although the voltage of converter is adjustable, the voltage of LEDpanel is to fix not again
It is adjustable.For the converter of different size, it is desirable to carrying out test by the LED panel of same specification can not reach, because
This can be replaced is tested using different LED panel, and the commonality difference of test mode is, it is necessary to purchase many different LED
Panel, Expenses Cost and testing time.
In view of this, it is really necessary to provide a kind of test circuit of converter, to solve the above problems.
【The content of the invention】
It is therefore an object of the present invention to provide a kind of test circuit of converter, with solve the prior art correspond to it is different
, it is necessary to replace different LED panel during converter (converter), the problem of Expenses Cost and testing time.
In order to achieve the above object, the test circuit of converter provided by the invention, the converter include a cathode electricity
Output pin and several feedback output pins are pressed, which includes some parallel branches, if each branch includes
A LED for dry series connection, the positive and negative anodes sequential of the LED in each branch, the cathode of the first LED of each branch
One of the cathode voltage output pin, end LED connections several feedback output pins of each branch are connect,
Several positive and negative interpolars in the LED on each branch are connected with wire jumper.
Alternatively, the converter is constant current output, the adjustable converter of voltage.
Alternatively, the pressure drop of each LED is 3~3.3V.
Alternatively, the branch is 4~8.
Alternatively, 8~30 LED are included in the branch respectively.
Alternatively, 15 LED are included in the branch respectively.
Alternatively, the LED that positive and negative interpolar is equipped with wire jumper in the branch is 4.
Compared to the prior art, using the test circuit of the converter of the present invention, when testing different converters, only need
The correspondingly optionally wire jumper described in short circuit, and then reach the output current that electric current in each branch meets converter in each branch
Demand, and the voltage of converter is then accordingly adjusted to the virtual voltage in each branch.As it can be seen that corresponding different output current
Converter, only need to be by adjusting the wire jumper short circuit number in test circuit, and need not use and more will not relate to more to LED panel
LED panel are changed, use the time saving cost-saving of the test circuit.
【Brief description of the drawings】
Fig. 1 is schematically shown as the circuit diagram of one preferred embodiment of test circuit of the converter of the present invention.
【Embodiment】
Fig. 1 is please referred to, Fig. 1 is schematically shown as the circuit diagram of one preferred embodiment of test circuit of the converter of the present invention.
In order to achieve the above object, the test circuit of converter provided by the invention, the converter 100 include a cathode
Voltage output pin 101 and several feedback output pins 102, which includes some parallel branches, each described
Branch includes the LED201 of several series connection, the positive and negative anodes sequential of the LED201 in each branch, each branch
The cathode of the first LED201 on road connects the cathode voltage output pin 101, described in the end LED101 connections of each branch
One of several feedback output pins 102 (the feedback output pin 102 in figure exemplified by four, isens1~4), each institute
The several positive and negative interpolars stated in the LED201 on branch are connected with wire jumper (jumper) 202.
Wherein, the converter 100 is constant current output, the adjustable converter of voltage.Wherein, each LED201
Pressure drop can be 3~3.3V.The branch can be 4~8, can include 8~30 LED201 respectively in the branch.
Certainly, the number of the bar number of branch and each branch LED201 are the demands of the converter in order to meet to test accordingly.
Exemplified by embodiment shown in circuit diagram, include 15 LED201 in the branch respectively, and in the branch just
The LED201 equipped with wire jumper 202 is 4 between anode.In order to meet the needs of 100 output current of converter, it may be desirable to which short circuit is each
Three LED201 positive and negative anodes in branch.By taking the pressure drop of the LED201 is 3~3.3V as an example, then remaining 11 LED201
Stagnation pressure is reduced to 36~39.6V, and the output voltage of converter 100 can then be adjusted to 36~39.6V (cathodes of converter 100
It is formed into a loop respectively between voltage output pin 101 and several feedback output pins 102).
Test for 100 output current of converter then uses galvanometer (for example with universal meter), defeated in cathode voltage
Going out between pin 101 and each branch to draw two test points 203 to be tested.
Using the test circuit of the converter of the present invention, when testing different converters 100, only need correspondingly at each
Optionally wire jumper 202 described in short circuit, and then reach the output current demand that electric current in each branch meets converter 100 in road,
And the voltage of converter 100 is then accordingly adjusted to the virtual voltage in each branch.As it can be seen that corresponding different output current turns
Parallel operation 100, only need to be by adjusting the 202 short circuit number of wire jumper in test circuit 200, and need not use to LED panel less
It can be related to and replace LED panel, use the 200 time saving cost-saving of test circuit.
It is noted that the invention is not restricted to the above embodiment, any person skilled in the art is based on this hair
Any simple modification, equivalent change and modification that bright technical solution makees above-described embodiment, both falls within the protection model of the present invention
In enclosing.
Claims (7)
1. a kind of test circuit of converter, which includes a cathode voltage output pin and several feedback outputs are drawn
Foot, it is characterised in that the test circuit includes some parallel branches, and each branch includes the LED of several series connection, each institute
The positive and negative anodes sequential of the LED in branch is stated, the cathode of the first LED of each branch connects the cathode voltage output
One of pin, end LED connections several feedback output pins of each branch, it is described on each branch
Several positive and negative interpolars in LED are connected with wire jumper；It is correspondingly optionally short in each branch when testing different converters
The wire jumper is connect, reaches the output current demand that electric current in each branch meets converter, the voltage of converter is accordingly adjusted to each
Virtual voltage in branch.
2. the test circuit of converter as claimed in claim 1, it is characterised in that the converter is constant current output, voltage
Adjustable converter.
3. the test circuit of converter as claimed in claim 1 or 2, it is characterised in that the pressure drop of each LED for 3~
3.3V。
4. the test circuit of converter as claimed in claim 1 or 2, it is characterised in that the branch is 4~8.
5. the test circuit of converter as claimed in claim 1 or 2, it is characterised in that include 8~30 in the branch respectively
A LED.
6. the test circuit of converter as claimed in claim 5, it is characterised in that include 15 LED in the branch respectively.
7. the test circuit of converter as claimed in claim 6, it is characterised in that positive and negative interpolar is equipped with wire jumper in the branch
LED be 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410456489.3A CN105467232B (en) | 2014-09-10 | 2014-09-10 | The test circuit of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410456489.3A CN105467232B (en) | 2014-09-10 | 2014-09-10 | The test circuit of converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105467232A CN105467232A (en) | 2016-04-06 |
| CN105467232B true CN105467232B (en) | 2018-04-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410456489.3A Active CN105467232B (en) | 2014-09-10 | 2014-09-10 | The test circuit of converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN105467232B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI718724B (en) * | 2019-10-25 | 2021-02-11 | 台灣愛司帝科技股份有限公司 | Led wafer, and led wafer detection device and method |
| CN113589214B (en) * | 2021-08-05 | 2024-02-20 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | CT (computed tomography) secondary through-flow method for power plant |
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| CN102445635A (en) * | 2010-10-11 | 2012-05-09 | 中国电信股份有限公司 | Quick tester for wire jumper |
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| CN103150983A (en) * | 2011-12-07 | 2013-06-12 | 美格纳半导体有限公司 | Detecting circuit for short of LED array and LED driving apparatus |
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| CN204154823U (en) * | 2014-09-10 | 2015-02-11 | 神讯电脑(昆山)有限公司 | The test circuit of converter |
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| CN101153888A (en) * | 2006-09-29 | 2008-04-02 | 比亚迪股份有限公司 | Testing method for luminous parallel path of flexible printing circuit board |
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| CN102692594A (en) * | 2011-03-21 | 2012-09-26 | 海洋王照明科技股份有限公司 | Tool and method for testing constant current of LED drive board |
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| CN102866346A (en) * | 2012-09-14 | 2013-01-09 | 京东方科技集团股份有限公司 | Platform and method for testing light-emitting diode (LED) array drive efficiency |
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| Publication number | Publication date |
|---|---|
| CN105467232A (en) | 2016-04-06 |
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